Blockchain investigator ZachXBT alleges that John Daghita, son of the CEO of a US Marshals Service crypto custody contractor, siphoned millions from government-controlled wallets tied to the 2016 Bitfinex hack. These claims remain unproven in court with no charges filed, while the involved custody firm's online presence has been deactivated. The case highlights broader concerns over digital asset custody and accountability within government-held cryptocurrencies.